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Personal Loan Calculator

Calculate repayments on a personal loan from NZ banks and lenders. Compare interest rates, loan terms, and total cost of borrowing.

By Konstantin IakovlevPublished 28 March 2026Last reviewed
Data stays on your deviceRBNZ market data

About this calculator

This calculator uses NZ Consumer Protection borrowing guidance. Reference: Standard amortisation formula. Last consulted 20 March 2026.

Current NZ personal loan rates

Indicative — Q2 2026 market
  • Unsecured personal (typical): 10–18% p.a.
  • Secured personal (vehicle, etc): 8–13% p.a.
  • Typical term: 1–7 years
  • Min loan amount: $1,000–$3,000
  • Max unsecured: $50,000 (most lenders)
  • Establishment fee: $0–$500

Disclaimer

This calculator provides estimates for general information purposes only. Results should not be relied upon as professional financial, tax, or legal advice. Tax rates and thresholds are based on publicly available IRD data and may change. Always consult a qualified tax agent or financial adviser for advice specific to your circumstances.

How personal loan repayments are calculated

Personal loans use the standard amortisation formula. NZ unsecured personal loan rates are 10-20% — much higher than mortgages because no collateral.

  1. 1

    Calculate monthly payment (PMT)

    PMT = P × i × (1+i)^n ÷ ((1+i)^n − 1)

    P = principal, i = monthly rate, n = total months.

  2. 2

    Total interest paid

    Total_interest = (PMT × n) − P

    Higher rate + shorter term = less total interest.

  3. 3

    Effective annual cost

    Annual_cost = PMT × 12

    Compare against your annual income for affordability check.

Worked example

Inputs: $15,000 loan, 13% rate, 3 years

Result: Monthly $505. Total $18,176. Interest $3,176.

Frequently Asked Questions

What interest rates do NZ personal loans charge?
Personal loan interest rates in New Zealand vary widely depending on the lender, loan amount, and your credit history. As of 2025, major bank personal loan rates typically range from 9% to 20% per annum (p.a.) for secured and unsecured loans respectively. Credit unions and cooperative lenders often offer rates in the 8%–14% range. Finance companies and online lenders may charge 15%–30% or higher for borrowers with limited credit history. The Credit Contracts and Consumer Finance Act 2003 (CCCFA) introduced a responsible lending code and requires lenders to disclose the annual interest rate, total cost of credit, and all fees upfront. Under 2021 amendments, there is also a cost-of-credit cap — for high-cost loans (above 50% p.a.), total interest and fees cannot exceed the original principal. Always compare the Annual Percentage Rate (APR), which includes fees, rather than just the advertised interest rate. Source: MBIE — CCCFA; Consumer NZ — Personal Loans.
How does the loan term affect total interest paid?
The loan term has a significant impact on the total interest you pay over the life of a personal loan in New Zealand. A longer term lowers your monthly repayment but increases the total interest cost. For example, a $20,000 personal loan at 13% p.a.: over 3 years, monthly repayments are around $674 and total interest paid is approximately $4,264; over 5 years, monthly repayments fall to $454 but total interest rises to $7,240 — a difference of nearly $3,000 more in interest for the convenience of lower monthly payments. The rule of thumb is: choose the shortest loan term your budget can comfortably manage. Making extra repayments when possible can significantly reduce total interest, especially in the early years of the loan when the interest component of each repayment is highest. Many NZ personal loan contracts allow extra repayments without penalty. Source: Consumer NZ — Personal Loans; MBIE — Responsible Lending.
What is a comparison rate?
A comparison rate (also sometimes called the Annual Percentage Rate or APR in New Zealand) combines the interest rate and most fees and charges into a single annual percentage rate, making it easier to compare the true cost of different loan products. For example, a lender might advertise a 10% interest rate, but with a $300 establishment fee and $10/month account fee on a $10,000 loan over 5 years, the comparison rate could be closer to 12.5%. Under New Zealand's Credit Contracts and Consumer Finance Act (CCCFA), lenders must disclose the total cost of credit (including all fees) before you sign. Not all fees are included in the comparison rate — for example, early repayment fees may be excluded — so read the full loan disclosure carefully. The comparison rate is most useful when comparing loans of the same size and term across different lenders. Source: MBIE — CCCFA (mbie.govt.nz); Consumer NZ.
Can I repay a personal loan early in NZ?
Yes, in most cases you can repay a personal loan early in New Zealand, but you should check whether your lender charges an early repayment fee. Under the Credit Contracts and Consumer Finance Act 2003 (CCCFA), lenders can charge a reasonable early repayment fee to compensate for interest income lost, but it must be disclosed in the loan contract. Many bank personal loans allow unlimited extra repayments and early full repayment at any time without penalty, especially for variable-rate loans. Fixed-rate personal loans are more likely to have early repayment fees, often equal to around 1–3 months' interest. Some lenders cap early repayment fees at a fixed dollar amount. If your loan has a significant remaining balance and you have come into extra funds, paying off the loan early can save considerably on total interest costs. Always request a full loan settlement quote from your lender before making a lump-sum payment. Source: MBIE — CCCFA; Consumer NZ — Personal Loans.

Personal loans in NZ are unsecured loans for any purpose. Interest rates are higher than home loans due to the lack of security. The CCCFA (Credit Contracts and Consumer Finance Act) requires lenders to conduct responsible lending checks.

How this calculator works

Same amortization formula as car loans: monthly payment = P × (r(1+r)^n) / ((1+r)^n − 1). Key cost comparison: total interest = (monthly payment × n) − principal.

NZ Personal Loan Rates & Terms (2025)

Bank personal loan rate10–15% p.a.
Finance company rate15–30%+ p.a.
Typical repayment term1–7 years
CCCFA requirementLender must verify affordability
Early repaymentSome lenders charge break fees

Always check the total cost of credit (TCOC) not just the monthly payment. Compare across lenders using the comparison rate.

Worked Examples

$10,000 personal loan at 12% p.a. over 3 years

Monthly payment $332, total interest $1,952.

  1. Principal: $10,000
  2. Monthly rate: 12% / 12 = 1.0%
  3. Months: 36
  4. Monthly payment = $10,000 × (0.01 × 1.01^36) / (1.01^36 - 1)
  5. 1.01^36 = 1.4308
  6. Monthly payment = $10,000 × 0.014308 / 0.4308 = $332
  7. Total repaid: $332 × 36 = $11,952
  8. Total interest: $11,952 - $10,000 = $1,952

$20,000 personal loan at 15% p.a. over 5 years

Monthly payment $476, total interest $8,560.

  1. Principal: $20,000
  2. Monthly rate: 15% / 12 = 1.25%
  3. Months: 60
  4. Monthly payment = $20,000 × (0.0125 × 1.0125^60) / (1.0125^60 - 1)
  5. 1.0125^60 = 2.1072
  6. Monthly payment = $20,000 × 0.026340 / 1.1072 = $476
  7. Total repaid: $476 × 60 = $28,560
  8. Total interest: $28,560 - $20,000 = $8,560

Built and maintained by Konstantin Iakovlev. Data sourced from the IRD and official New Zealand government sources.

Last reviewed: